The New Specialized Tarmac is no longer under the SL moniker
The 2015 Tarmac represents a revolution in bicycle design that begins and ends with the rider. We call it Rider-First Engineered™ and it was inspired by our partnership with the leaders in Formula 1 development, McLaren*. Each of the seven frame sizes were developed independently, based exclusively on the real world stresses introduced by the corresponding rider.
The result is a significant advance of complete performance in every frame size, from 49 to 56 to 61, and everything in between. In short – breakthrough climbing, sprinting, cornering and performance for riders of every size. Because there’s only one bike you care about. Yours.